Merge tag 'xfs-for-linus-v3.12-rc4' of git://oss.sgi.com/xfs/xfs

[cascardo/linux.git] / drivers / hid / hid-input.c

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index b420f4a..8741d95 100644 (file)
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -485,6 +485,10 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
        if (field->flags & HID_MAIN_ITEM_CONSTANT)
                goto ignore;
 
+       /* Ignore if report count is out of bounds. */
+       if (field->report_count < 1)
+               goto ignore;
+
        /* only LED usages are supported in output fields */
        if (field->report_type == HID_OUTPUT_REPORT &&
                        (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
@@ -1236,7 +1240,11 @@ static void report_features(struct hid_device *hid)
 
        rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
        list_for_each_entry(rep, &rep_enum->report_list, list)
-               for (i = 0; i < rep->maxfield; i++)
+               for (i = 0; i < rep->maxfield; i++) {
+                       /* Ignore if report count is out of bounds. */
+                       if (rep->field[i]->report_count < 1)
+                               continue;
+
                        for (j = 0; j < rep->field[i]->maxusage; j++) {
                                /* Verify if Battery Strength feature is available */
                                hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
@@ -1245,6 +1253,7 @@ static void report_features(struct hid_device *hid)
                                        drv->feature_mapping(hid, rep->field[i],
                                                             rep->field[i]->usage + j);
                        }
+               }
 }
 
 static struct hid_input *hidinput_allocate(struct hid_device *hid)